SSL Checker
Submit the Hostname and Port in the fields below. This checker supports SNI and STARTTLS.
Report
It's all good. We have not detected any issues.
Hostname: | done Matches Common Name or/and SAN |
Expired: | done No (52 days till expiration) |
Public Key: | done We were unable to find any issues in the public key of end-entity certificate |
Trusted: | done Yes, we were able to verify the certificate |
Self-Signed: | done No, the end-entity certificate is not self-signed |
Chain Issues: | done No, we were unable to detect any issues in the certificate chain sent by the server |
Weak signatures: | done No, certificates sent by the server were not signed utilizing a weak hash function |
OCSP Status: | done OCSP Responder returned "good" status for the end-entity certificate |
DNS Information
Resolves To: | 151.101.1.29 |
Reverse IP lookup: | No records found |
Nameserver: | ns01.r9dns.net. |
Nameserver: | ns02.r9dns.net. |
Nameserver: | ns03.r9dns.net. |
Nameserver: | ns04.r9dns.net. |
Nameserver: | dns2.p10.nsone.net. |
Nameserver: | dns1.p10.nsone.net. |
Nameserver: | dns3.p10.nsone.net. |
Nameserver: | dns4.p10.nsone.net. |
General Information
Common Name: | kayak.de |
SANs: | DNS:kayak.de Total number of SANs: 1 |
Signature Algorithm: | sha256WithRSAEncryption |
Key Type: | RSA |
Key size: | 2048 bits |
Serial Number: | 442592daac06f8b9bdf0372eee81f2e9494 |
Not Before: | Mar 12, 2024 15:17:08 GMT |
Not After: | Jun 10, 2024 15:17:07 GMT |
Number of certs: | 3 |
Revocation Status: | good |
OCSP Stapling: | Supported |
Server: | Varnish |
HSTS: | Not Supported |
HPKP: | Not Supported |
Chain Information
Certificate # 1 - Common Name: kayak.de
Decode this certificate for verbose information → launchSubject Common Name | kayak.de |
Issuer Common Name | R3 |
Issuer Organization | Let's Encrypt |
Not Before: | Mar 12, 2024 15:17:08 GMT |
Not After: | Jun 10, 2024 15:17:07 GMT |
Signature Algorithm: | sha256WithRSAEncryption |
Serial Number: | 442592daac06f8b9bdf0372eee81f2e9494 |
SHA1 Fingerprint: | 29:41:07:EC:80:85:8E:BD:93:AB:48:42:D4:61:BE:05:EB:C0:65:B1 |
MD5 Fingerprint: | A8:EE:BD:6A:D6:88:3E:A9:C4:5E:F6:D2:D2:BC:30:0B |
Certificate # 2 - Common Name: R3
Decode this certificate for verbose information → launchIn place? | Yes, this certificate directly certifies the preceding one |
Subject Common Name | R3 |
Subject Organization | Let's Encrypt |
Issuer Common Name | ISRG Root X1 |
Issuer Organization | Internet Security Research Group |
Not Before: | Sep 04, 2020 00:00:00 GMT |
Not After: | Sep 15, 2025 16:00:00 GMT |
Signature Algorithm: | sha256WithRSAEncryption |
Serial Number: | 912b084acf0c18a753f6d62e25a75f5a |
SHA1 Fingerprint: | A0:53:37:5B:FE:84:E8:B7:48:78:2C:7C:EE:15:82:7A:6A:F5:A4:05 |
MD5 Fingerprint: | E8:29:E6:5D:7C:43:07:D6:FB:C1:3C:17:9E:03:7A:36 |
Certificate # 3 - Common Name: ISRG Root X1
Decode this certificate for verbose information → launchIn place? | Yes, this certificate directly certifies the preceding one |
Subject Common Name | ISRG Root X1 |
Subject Organization | Internet Security Research Group |
Issuer Common Name | DST Root CA X3 |
Issuer Organization | Digital Signature Trust Co. |
Not Before: | Jan 20, 2021 19:14:03 GMT |
Not After: | Sep 30, 2024 18:14:03 GMT |
Signature Algorithm: | sha256WithRSAEncryption |
Serial Number: | 4001772137d4e942b8ee76aa3c640ab7 |
SHA1 Fingerprint: | 93:3C:6D:DE:E9:5C:9C:41:A4:0F:9F:50:49:3D:82:BE:03:AD:87:BF |
MD5 Fingerprint: | C1:E1:FF:07:F9:F6:88:49:82:74:D1:A1:80:53:EA:BF |
OpenSSL Handshake
depth=2 C = US, O = Internet Security Research Group, CN = ISRG Root X1 verify return:1 depth=1 C = US, O = Let's Encrypt, CN = R3 verify return:1 depth=0 CN = kayak.de verify return:1 CONNECTED(00000003) OCSP response: ====================================== OCSP Response Data: OCSP Response Status: successful (0x0) Response Type: Basic OCSP Response Version: 1 (0x0) Responder Id: C = US, O = Let's Encrypt, CN = R3 Produced At: Apr 15 03:53:00 2024 GMT Responses: Certificate ID: Hash Algorithm: sha1 Issuer Name Hash: 48DAC9A0FB2BD32D4FF0DE68D2F567B735F9B3C4 Issuer Key Hash: 142EB317B75856CBAE500940E61FAF9D8B14C2C6 Serial Number: 0442592DAAC06F8B9BDF0372EEE81F2E9494 Cert Status: good This Update: Apr 15 03:53:00 2024 GMT Next Update: Apr 22 03:52:58 2024 GMT Signature Algorithm: sha256WithRSAEncryption 67:60:3a:07:3c:86:e8:db:bb:ef:b8:6b:1f:37:ac:06:f9:7e: d8:b1:27:43:5c:f3:0a:cc:bd:7c:c5:57:ac:45:57:a0:54:3b: 69:38:a0:59:10:5b:a3:67:06:bf:3a:93:b4:70:c1:b5:11:fc: 57:b6:c6:08:0b:a1:9e:b2:a3:14:9d:76:c9:1d:a7:3e:9b:63: ca:05:d3:6b:af:a2:98:f7:86:9b:7a:7e:eb:22:32:f9:3f:13: 12:23:3a:f4:21:b4:34:5f:43:44:19:15:6e:8a:5a:29:7b:6d: 2a:29:99:92:74:f4:f3:7f:e6:f6:fe:17:45:87:b8:2a:ae:29: 0d:3d:40:26:8b:63:37:05:14:2b:c2:7d:da:b5:04:54:09:ba: a4:49:9c:5f:57:b6:d6:9f:ff:e0:90:71:98:69:ef:ad:1d:eb: 56:d3:8a:19:59:e0:b6:2f:52:30:96:d6:2b:fd:10:9d:35:d7: 2c:d1:e8:87:b7:34:b3:c4:17:c9:63:e4:b8:51:bf:ea:91:31: 86:1d:f1:09:96:97:05:47:45:b2:15:29:d5:36:5d:22:a8:62: 83:6e:32:b6:d1:a1:b1:fa:33:a5:d0:3b:b4:49:6f:3d:28:6c: 91:dc:d2:95:eb:2c:44:e5:43:98:e4:5e:51:16:29:b3:53:f0: 96:3b:4c:ed ====================================== --- Certificate chain 0 s:CN = kayak.de i:C = US, O = Let's Encrypt, CN = R3 -----BEGIN CERTIFICATE----- MIIE3jCCA8agAwIBAgISBEJZLarAb4ub3wNy7ugfLpSUMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yNDAzMTIxNTE3MDhaFw0yNDA2MTAxNTE3MDdaMBMxETAPBgNVBAMT CGtheWFrLmRlMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvOn+ZALH XJEkc4oqyBjeGGf9TgNn+N+ivALF1a2mcbpkFFbquysWGJ75AAGtN27JAiL9V1/s TzbjWuXbfFMKnKMXHNgcCl7zLDslYzdrMXt2nQLEyBiuUaBFeboB502lW2K+KHFx cmwGJl69PRPw5MpVcOSexXi0fZqZ2TYryMUKL3AY0N7+RiZJU/3XKpfRny42HQTy f4sMNKt6q4GJx0onjaFmGFAFhqZLRetrpM5psYm+l2LZSwrVqv3mbmmK63wUX+7p LmlJt6eGd4KRGGVvBRv7APUUD1l4wm/QS1Rn24WFX8wV4lZOfEALUoOaSCUjWTIc WFJU8VDj/GLwbQIDAQABo4ICCzCCAgcwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQW MBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBQm Yst0/YHL8BKN0ti5WEnj9ih5GzAfBgNVHSMEGDAWgBQULrMXt1hWy65QCUDmH6+d ixTCxjBVBggrBgEFBQcBAQRJMEcwIQYIKwYBBQUHMAGGFWh0dHA6Ly9yMy5vLmxl bmNyLm9yZzAiBggrBgEFBQcwAoYWaHR0cDovL3IzLmkubGVuY3Iub3JnLzATBgNV HREEDDAKgghrYXlhay5kZTATBgNVHSAEDDAKMAgGBmeBDAECATCCAQUGCisGAQQB 1nkCBAIEgfYEgfMA8QB2AEiw42vapkc0D+VqAvqdMOscUgHLVt0sgdm7v6s52IRz AAABjjN0EugAAAQDAEcwRQIhAJZxp5CQJW5gGTrxua7YA0nVaLmxR97w4DvJzKqM BcjbAiBUGf3iHTFsohDW0IN+tdlqNJzwXiIrMUVHcyN8WrlCXAB3AKLiv9Ye3i8v B6DWTm03p9xlQ7DGtS6i2reK+Jpt9RfYAAABjjN0EywAAAQDAEgwRgIhAKNqJ37m KDUE627xitlrqYOY5ttUcBbqI1nA3Pxjak7pAiEAuUt/PL6PZ5LgACqRDrHn76Zn vNoTfN8UOJ9tYZYi6BYwDQYJKoZIhvcNAQELBQADggEBABP8PeoVeP2402/gT9dO 3seWgXP08kX4Qt3D6FOKOMZsmiJu1g5KUy3RiegcuVAiG0fwkaQDhysE3oCDSEdB Nd9lx+mYq2wfi0hSMv8F/4KMwsyowLKHpS3gULr4JzMOnG2DS0p/4FSw2aau4/dN NV6RWXvF1bDaIm6odfeHrCIow2+M13MANplp91GRt8y7ePNqDG/V4V8lmQ8LiLNP MUOozJSdMFdphrp+3oziJqha4o3qGo1ptg9rblR9WkO4Se9BGI3hTMcluBu93H6x mrNFTORw7gK0nLq3cVsu40sf6f0wYYcZmpXzwLwm+2rQESb5vV2scr6rxhycaZVj A3Q= -----END CERTIFICATE----- 1 s:C = US, O = Let's Encrypt, CN = R3 i:C = US, O = Internet Security Research Group, CN = ISRG Root X1 -----BEGIN CERTIFICATE----- MIIFFjCCAv6gAwIBAgIRAJErCErPDBinU/bWLiWnX1owDQYJKoZIhvcNAQELBQAw TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMjAwOTA0MDAwMDAw WhcNMjUwOTE1MTYwMDAwWjAyMQswCQYDVQQGEwJVUzEWMBQGA1UEChMNTGV0J3Mg RW5jcnlwdDELMAkGA1UEAxMCUjMwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEK AoIBAQC7AhUozPaglNMPEuyNVZLD+ILxmaZ6QoinXSaqtSu5xUyxr45r+XXIo9cP R5QUVTVXjJ6oojkZ9YI8QqlObvU7wy7bjcCwXPNZOOftz2nwWgsbvsCUJCWH+jdx sxPnHKzhm+/b5DtFUkWWqcFTzjTIUu61ru2P3mBw4qVUq7ZtDpelQDRrK9O8Zutm NHz6a4uPVymZ+DAXXbpyb/uBxa3Shlg9F8fnCbvxK/eG3MHacV3URuPMrSXBiLxg Z3Vms/EY96Jc5lP/Ooi2R6X/ExjqmAl3P51T+c8B5fWmcBcUr2Ok/5mzk53cU6cG /kiFHaFpriV1uxPMUgP17VGhi9sVAgMBAAGjggEIMIIBBDAOBgNVHQ8BAf8EBAMC AYYwHQYDVR0lBBYwFAYIKwYBBQUHAwIGCCsGAQUFBwMBMBIGA1UdEwEB/wQIMAYB Af8CAQAwHQYDVR0OBBYEFBQusxe3WFbLrlAJQOYfr52LFMLGMB8GA1UdIwQYMBaA FHm0WeZ7tuXkAXOACIjIGlj26ZtuMDIGCCsGAQUFBwEBBCYwJDAiBggrBgEFBQcw AoYWaHR0cDovL3gxLmkubGVuY3Iub3JnLzAnBgNVHR8EIDAeMBygGqAYhhZodHRw Oi8veDEuYy5sZW5jci5vcmcvMCIGA1UdIAQbMBkwCAYGZ4EMAQIBMA0GCysGAQQB gt8TAQEBMA0GCSqGSIb3DQEBCwUAA4ICAQCFyk5HPqP3hUSFvNVneLKYY611TR6W PTNlclQtgaDqw+34IL9fzLdwALduO/ZelN7kIJ+m74uyA+eitRY8kc607TkC53wl ikfmZW4/RvTZ8M6UK+5UzhK8jCdLuMGYL6KvzXGRSgi3yLgjewQtCPkIVz6D2QQz CkcheAmCJ8MqyJu5zlzyZMjAvnnAT45tRAxekrsu94sQ4egdRCnbWSDtY7kh+BIm lJNXoB1lBMEKIq4QDUOXoRgffuDghje1WrG9ML+Hbisq/yFOGwXD9RiX8F6sw6W4 avAuvDszue5L3sz85K+EC4Y/wFVDNvZo4TYXao6Z0f+lQKc0t8DQYzk1OXVu8rp2 yJMC6alLbBfODALZvYH7n7do1AZls4I9d1P4jnkDrQoxB3UqQ9hVl3LEKQ73xF1O yK5GhDDX8oVfGKF5u+decIsH4YaTw7mP3GFxJSqv3+0lUFJoi5Lc5da149p90Ids hCExroL1+7mryIkXPeFM5TgO9r0rvZaBFOvV2z0gp35Z0+L4WPlbuEjN/lxPFin+ HlUjr8gRsI3qfJOQFy/9rKIJR0Y/8Omwt/8oTWgy1mdeHmmjk7j1nYsvC9JSQ6Zv MldlTTKB3zhThV1+XWYp6rjd5JW1zbVWEkLNxE7GJThEUG3szgBVGP7pSWTUTsqX nLRbwHOoq7hHwg== -----END CERTIFICATE----- 2 s:C = US, O = Internet Security Research Group, CN = ISRG Root X1 i:O = Digital Signature Trust Co., CN = DST Root CA X3 -----BEGIN CERTIFICATE----- MIIFYDCCBEigAwIBAgIQQAF3ITfU6UK47naqPGQKtzANBgkqhkiG9w0BAQsFADA/ MSQwIgYDVQQKExtEaWdpdGFsIFNpZ25hdHVyZSBUcnVzdCBDby4xFzAVBgNVBAMT DkRTVCBSb290IENBIFgzMB4XDTIxMDEyMDE5MTQwM1oXDTI0MDkzMDE4MTQwM1ow TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwggIiMA0GCSqGSIb3DQEB AQUAA4ICDwAwggIKAoICAQCt6CRz9BQ385ueK1coHIe+3LffOJCMbjzmV6B493XC ov71am72AE8o295ohmxEk7axY/0UEmu/H9LqMZshftEzPLpI9d1537O4/xLxIZpL wYqGcWlKZmZsj348cL+tKSIG8+TA5oCu4kuPt5l+lAOf00eXfJlII1PoOK5PCm+D LtFJV4yAdLbaL9A4jXsDcCEbdfIwPPqPrt3aY6vrFk/CjhFLfs8L6P+1dy70sntK 4EwSJQxwjQMpoOFTJOwT2e4ZvxCzSow/iaNhUd6shweU9GNx7C7ib1uYgeGJXDR5 bHbvO5BieebbpJovJsXQEOEO3tkQjhb7t/eo98flAgeYjzYIlefiN5YNNnWe+w5y sR2bvAP5SQXYgd0FtCrWQemsAXaVCg/Y39W9Eh81LygXbNKYwagJZHduRze6zqxZ Xmidf3LWicUGQSk+WT7dJvUkyRGnWqNMQB9GoZm1pzpRboY7nn1ypxIFeFntPlF4 FQsDj43QLwWyPntKHEtzBRL8xurgUBN8Q5N0s8p0544fAQjQMNRbcTa0B7rBMDBc SLeCO5imfWCKoqMpgsy6vYMEG6KDA0Gh1gXxG8K28Kh8hjtGqEgqiNx2mna/H2ql PRmP6zjzZN7IKw0KKP/32+IVQtQi0Cdd4Xn+GOdwiK1O5tmLOsbdJ1Fu/7xk9TND TwIDAQABo4IBRjCCAUIwDwYDVR0TAQH/BAUwAwEB/zAOBgNVHQ8BAf8EBAMCAQYw SwYIKwYBBQUHAQEEPzA9MDsGCCsGAQUFBzAChi9odHRwOi8vYXBwcy5pZGVudHJ1 c3QuY29tL3Jvb3RzL2RzdHJvb3RjYXgzLnA3YzAfBgNVHSMEGDAWgBTEp7Gkeyxx +tvhS5B1/8QVYIWJEDBUBgNVHSAETTBLMAgGBmeBDAECATA/BgsrBgEEAYLfEwEB ATAwMC4GCCsGAQUFBwIBFiJodHRwOi8vY3BzLnJvb3QteDEubGV0c2VuY3J5cHQu b3JnMDwGA1UdHwQ1MDMwMaAvoC2GK2h0dHA6Ly9jcmwuaWRlbnRydXN0LmNvbS9E U1RST09UQ0FYM0NSTC5jcmwwHQYDVR0OBBYEFHm0WeZ7tuXkAXOACIjIGlj26Ztu MA0GCSqGSIb3DQEBCwUAA4IBAQAKcwBslm7/DlLQrt2M51oGrS+o44+/yQoDFVDC 5WxCu2+b9LRPwkSICHXM6webFGJueN7sJ7o5XPWioW5WlHAQU7G75K/QosMrAdSW 9MUgNTP52GE24HGNtLi1qoJFlcDyqSMo59ahy2cI2qBDLKobkx/J3vWraV0T9VuG WCLKTVXkcGdtwlfFRjlBz4pYg1htmf5X6DYO8A4jqv2Il9DjXA6USbW1FzXSLr9O he8Y4IWS6wY7bCkjCWDcRQJMEhg76fsO3txE+FiYruq9RUWhiF1myv4Q6W+CyBFC Dfvp7OOGAN6dEOM4+qR9sdjoSYKEBpsr6GtPAQw4dy753ec5 -----END CERTIFICATE----- --- Server certificate subject=CN = kayak.de issuer=C = US, O = Let's Encrypt, CN = R3 --- No client certificate CA names sent Peer signing digest: SHA256 Peer signature type: RSA-PSS Server Temp Key: X25519, 253 bits --- SSL handshake has read 5001 bytes and written 383 bytes Verification: OK --- New, TLSv1.3, Cipher is TLS_AES_128_GCM_SHA256 Server public key is 2048 bit Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE No ALPN negotiated Early data was not sent Verify return code: 0 (ok) --- DONE --- Post-Handshake New Session Ticket arrived: SSL-Session: Protocol : TLSv1.3 Cipher : TLS_AES_128_GCM_SHA256 Session-ID: A75B30864A1BE452C092837E8B06A1BBCBC956164A4976D4AFC05556EA540622 Session-ID-ctx: Resumption PSK: 3B286525CA66A0234F2DAAE8377FE86FD24F8F8A45C01C8E83E0B0BFFE86979D PSK identity: None PSK identity hint: None SRP username: None TLS session ticket lifetime hint: 3600 (seconds) TLS session ticket: 0000 - 35 b6 88 9e 79 a7 dc b4-7f 70 a7 c3 cb f3 34 e5 5...y....p....4. 0010 - 16 57 0f 8d b1 bb 16 26-7c 6a 75 3b c2 a1 b4 78 .W.....&|ju;...x 0020 - 93 dd a6 7b dc 6f bb cd-fa fd 74 ce 9f 35 25 1c ...{.o....t..5%. 0030 - 53 92 78 4e d9 23 f8 c7-0c da b7 24 1c f1 68 c8 S.xN.#.....$..h. 0040 - 41 8f 02 0c a6 56 65 17-2f b8 f8 38 3e fe 4e 62 A....Ve./..8>.Nb 0050 - b1 9d ec 7f f7 e4 0e 2b-f7 49 8f 41 ab 8a b1 f2 .......+.I.A.... 0060 - 90 22 78 55 81 43 f6 95-52 7d 6b fc 6b 7a 41 05 ."xU.C..R}k.kzA. 0070 - 0e 2b 99 c3 b4 bc 3c 08-60 c1 af ff 5c 1b 05 ec .+....<.`...\... 0080 - 0d 2a b2 8b 9d 9d db 03-09 41 c6 7e 6c 4d eb 48 .*.......A.~lM.H 0090 - 74 13 9a 95 a9 52 05 8d-35 14 a5 28 df 9e 58 c5 t....R..5..(..X. Start Time: 1713538019 Timeout : 7200 (sec) Verify return code: 0 (ok) Extended master secret: no Max Early Data: 8192 --- read R BLOCK